did you uninstall the driver yet?

if not do it in this order:
don't forget to set the audya up before plugging in the USB cable:
1) Menu -> Midi -> Utility -> USB Midi: [ON]
2)plug the audya (rear usb) into your laptop
3)go to device manager on your computer
4)right click on USB Audio Device in the 'sound, video etc' section and 'uninstall'
5)when thats done right click on the top of the tree (should be the name of your computer) select 'scan for new hardware'
6)Once the Audya has been found look in "Sounds and Audio Devices" in control panel again and see if its there under "MIDI MUSIC PLAYBACK"

TWD